Update how-to-build.rst - added macOS recommendations.

Added macOS recommendations. They worked for me; of course on other Macs, there might be other open dependencies or conflicts.

Looks good to me! Thanks for keeping our codebase clean.

However, I'm only a bot - so a human will still have to approve this request.

@rahix I'd like to take it, but i'm not familiar enough with the syntax

assigned to @rahix

merged

mentioned in commit 4d77b5c4